/Engine/Source/Runtime/Engine/Classes/Materials/MaterialLayersFunctions.h
struct FMaterialLayersFunctionsEditorOnlyData
TArray<FGuid>
DeletedParentLayerGuids
List of Guids that exist in the parent material that have been explicitly deleted This is needed to distinguish these layers from newly added layers in the parent material
TArray<FGuid>
LayerGuids
Guid that identifies each layer in this stack
TArray< EMateri...
LayerLinkStates
State of each layer's link to parent material
TArray<FText>
LayerNames
TArray< bool >
LayerStates
TArray< bool >
RestrictToBlendRelatives
TArray< bool >
RestrictToLayerRelatives